Silk Protein Hydrolysate for Corrosion Mitigation of Mild Steel in 1 N H2SO4

Autor:	V. Nijarubini, J. Mallika, M. Mantharasalan
Rok vydání:	2023
Předmět:	General Chemistry
Zdroj:	Asian Journal of Chemistry. 35:352-360
ISSN:	0975-427X 0970-7077
Popis:	In view as corrosion inhibitor, silk protein hydrolysate (SPH), a water-soluble hydrolysate obtained from silk protein (biopolymer) exhibits excellent protection to mild steel in 1 N H2SO4, especially at low concentration levels. Weight loss analysis propose a maximum efficiency for 10 ppm SPH at 303 K. Potentiodynamic polarization measurement revealed its functioning as a mixed-type inhibitor with enhanced polarization resistance. The best fits observed with Langmuir isotherm suggested the inhibitor-metal interaction to occur via physisorption mechanism. Surface examination through SEM (EDXS), water contact angle, AFM, FT-IR and Raman spectroscopy confirmed the formation of protective film.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b5dcb00d4ac6bc3e22d873cd2aee85cf https://doi.org/10.14233/ajchem.2023.26879 Zobrazit plný text záznamu